The body's immune system exists to identify and destroy foreign objects, whether they are bacteria, viruses, flecks of dirt or splinters. Unfortunately, nanoparticles designed to deliver drugs, and implanted devices like ...
Bio & Medicine
Feb 21, 2013
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0
MIT engineers have developed a fuel cell that runs on the same sugar that powers human cells: glucose. This glucose fuel cell could be used to drive highly efficient brain implants of the future, which could help paralyzed ...
Energy & Green Tech
Jun 13, 2012
1
0
A new power scheme for cardiac pacemakers turns to an unlikely source: vibrations from heartbeats themselves.
General Physics
Mar 2, 2012
3
0
In a compact lab space at Stanford University, Oscar Abilez, MD, trains a microscope on a small collection of cells in a petri dish. A video recorder projects what the microscope sees on a nearby monitor. The cells in the ...
Biotechnology
Sep 20, 2011
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1
Power-generating rubber films developed by Princeton University engineers could harness natural body movements such as breathing and walking to power pacemakers, mobile phones and other electronic devices.
Nanophysics
Jan 27, 2010
1
0
The mechanism by which fat-related molecules called lipids regulate pacemaker ion channel proteins, which help control the heart rhythm, has been revealed in a study from researchers at Weill Cornell Medicine.
Molecular & Computational biology
Nov 9, 2022
0
33
Implantable pacemakers have without doubt altered modern medicine, saving countless lives by regulating heart rhythm. But they have one serious shortcoming: Their batteries last only five to 12 years, at which point they ...
Bio & Medicine
Feb 20, 2019
0
57
University of Chicago scientists have pioneered a technique that could one day create a pacemaker that operates using tiny pulses of light.
Bio & Medicine
Dec 12, 2018
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247
A wireless, battery-less pacemaker that can be implanted directly into a patient's heart is being introduced by researchers from Rice University and their colleagues at the Texas Heart Institute (THI) at the IEEE's International ...
Engineering
Jun 5, 2017
1
580
Travelers frequently report experiencing a significantly slower jet lag recovery after an eastward vs. westward flight. While some are quick to dismiss this complaint as being "all in their head," new research suggests it ...
General Physics
Jul 12, 2016
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1474
A pacemaker (or artificial pacemaker, so as not to be confused with the heart's natural pacemaker) is a medical device which uses electrical impulses, delivered by electrodes contacting the heart muscles, to regulate the beating of the heart. The primary purpose of a pacemaker is to maintain an adequate heart rate, either because the heart's native pacemaker is not fast enough, or there is a block in the heart's electrical conduction system. Modern pacemakers are externally programmable and allow the cardiologist to select the optimum pacing modes for individual patients. Some combine a pacemaker and defibrillator in a single implantable device. Others have multiple electrodes stimulating differing positions within the heart to improve synchronisation of the lower chambers of the heart.
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